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Two dark cast iron pipe flanges with two bolt holes each

BELL AND GOSSETT

BELL AND GOSSETT 101207 Cast Iron Flange 1-1/2 in Pk2

SKU CH-H08D-DCBF9

Cast iron flange with two half-inch bolt holes fits 1-1/2 inch FNPT piping for HV series in-line circulating pumps

  • TypeDrain Components
  • Cast iron construction for long-lasting durability
  • Two-bolt mounting pattern simplifies installation
  • 1-1/2 inch FNPT connection fits compatible piping
  • Designed for in-line circulating pump systems
  • Pack of two flanges covers both connections

Cast-Iron Flange for HV-Series Pumps

This two-pack of Bell & Gossett cast-iron flanges fits 1-1/2 in. FNPT piping and bolts directly to HV-series in-line circulating pumps. Each flange uses two mounting holes with a 0.5 in. bolt-hole size. The components are not rated for potable-water systems.

FNPT Thread and Bolt-Pattern Constraints

The flange connects through a female NPT thread that matches only 1-1/2 in. pipe, so larger or smaller lines cannot be used without an adapter. The fixed two-hole pattern and 0.5 in. bolt holes limit the flange to pumps and housings that share the same spacing, preventing use with unrelated equipment.

Simple Bolt-On Installation

Installation requires aligning the two bolt holes with the pump flange, inserting bolts through the 0.5 in. holes, and tightening against a user-supplied gasket. Leaks typically occur when the gasket is omitted, reused, or when bolts are unevenly torqued, so a fresh gasket and cross-pattern tightening are essential.

Highlights

  • Cast iron construction for long-lasting durability
  • Two-bolt mounting pattern simplifies installation
  • 1-1/2 inch FNPT connection fits compatible piping
  • Designed for in-line circulating pump systems
  • Pack of two flanges covers both connections

Specifications

TypeDrain Components
BrandBell & Gossett
Model101007

Questions about this item

Should I choose the single flange or the pack of two for my HV series pump?

The listing is a pack of two cast-iron flanges, so you receive both pieces in one order.

What does the 1-1/2 inch compatible pipe size mean when the flange is installed on an in-line circulating pump?

It matches a 1-1/2 inch FNPT pipe connection on the pump, giving a direct threaded fit without adapters.

How does the 0.5 inch bolt hole size limit the hardware I can use with this standard flange?

The two mounting holes accept 0.5 inch bolts, so only hardware with that shank diameter will secure the flange properly.

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